---Someone is knocking at the door. Who may it be?---It ______ be Tom. He is still in the school.
Would More and more couples rather _______a second baby ______their first child can feel less lonely?
—What else did Tina ask you about the trip to Nanjing?—She asked me ______.
Jack is dishonest. He always________some excuses for doing something wrong.
—I really can't believe such a learned man has made so silly a mistake.— Don't you know_______ sense is worth more than knowledge?
—Do you have_______ in mind that you'd like for supper?—Well, _______ is OK with me.